Photographic-printing apparatus.



J. W. VIOKERS.

PHOTOGRAPHIC PRINTING APPARATUS. APPLICATION FILED JULY 17, 1907.

PATENTED APR. 7, 1908.

2 SHEETSSHEET 1.

No. 884,056. PATBNTED APR. 7, 1908.

J W. VIOKBRS.

PHOTOGRAPHIO PRINTING APPARATUS. APPLICATION FILED JULY 17. 1907.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

JAMES WARRY VICKERS, OF LONDON, ENGLAND. PHOTOGRAPHIC-PRINIIN G APPARATUS.

No. 884,056, Specification of Letters Patent. Patented April 7,1908.

Application filed July 17, 1907. Serial No. 384,217.

' To all w/zom it may concern: bearings and normally force same in the dilie it known that l, James WARRY VIOK- motion to tighten the band. ERS, a subject of the King of Great Britain, On the shaft of the roller 9 I mount agearresiding at Finsbury Square Buildings, Lonwheel 17 which engages with another wheel don, E. 0., England, have invented certain 18 arranged on the end of the lass roller 1, 0 new and useful Improvements in Photosuch wheel 18 being preferably as shown; graphic-PrintingApparatus, of which the folformed in one with one of the rings 2 secured lowing is a specification. to such glass roller. It will thereforebe seen- This invention relates to apparatus for use that when motion is imparted to the shaft of 0 in the production of photographic prints'by the roller 9, as for instance by means of these the ferro prussiate, f .rro gallic or like proc; -handle19and worm 2O acting on wheel 17, or esses from tracings etc, and its object is to by an electric or other suitable motor, such' simplify such apparatus andreduce the cost motion will be communicated to the endless thereof, while at the same time the operation band and also to the glass roller 1, so that will be facilitated and improved results obsuch band and the surface of the roller will- 70 tained. be caused to travel in the same direction and A suitable form of apparatus for carrying at exactly the same s eed. my invention into effect is illustrated in the Inside the glass rol er 1, which is open at accompanying drawings, in which: the ends, I mount a suitable number of elec- Figure l is a transverse section thereof, tric mercury tubes 21, or other high power 75 on a suitable stand, and illustrating the opin any suitable manner, and the c Fig. 2 a side elevation partly in section and electric. vacuum lights, same bein arran ed" with parts broken away, Fig. 3 an end View, in close proximity to that art 0 the re ler' and Fig. 4 a side elevation drawn to a reround which the endless and 10 passes. duced scale, showing the apparatus mounted Such mercury tubes or the like are su ported l ctrical 8O eration of the automatic switch hereinafter connections 22, 23 are preferably arran ed as described. 1 shown when four of such tubes are emp oyed,

In carrying out my invention I provide a so that the two on each side are in series with hollow roller 1, which is formed of glass of a each other and each pair is governed by a convenient length to suit the width of the switch 24 or the like, which switches may be paper to be used, such roller having rings 2 coupled together by arod 25 (see Fig. 3). A ofmetal or other suitable material secured reflector 40 is preferably arranged beneath around its ends and which fit into and are the tubes to reflect back light that would capable of revolx'ing freely in circular reotherwise be partly or completely lost.

35 cesse s formed inthe standards 3. The latter When mercury tubes are employed it is are firmly secured to a base plate 4, which necessary to cause the mercury to traverse for the purpose hereinafter described is mov such tubes from end to end, and for this purably mounted or, if desired, pivoted at 5 to pose I mount the entire apparatus on the the stand 6 on which the whole of the appatransverse pivots 5 so that it can be tipped to 45) ratus is supported: I also mount in bearbring either end of such tubes uppermost.

lugs 1n the standards 3 a number of band Itis also important that the mercury should rollers 7, 8, 9, the rollers 7 and 8 being arbe at the positive pole when the current is ranged one on each side of and in close proxturned on, and I therefore propose to employ I imity to the glass roller 1, while roller 9 may the automatic arrangement shown in Fig. 4,

45 as shown be disposed above and at a little consisting in the flexible connection 26 bedistance therefrom. Around the rollers 7, 8 tween the lever of the switch and a fixed and 9 I arrange a continuous band 10 of oint of the stand 6, and which is of such cloth or other material so that it presses on ength as to actuate such lever-to switch ofi' about half the circumference of the glass the current when one end of the apparatus is 50 roller 1, and for the purpose of keeping the lowered and switch it on when such end is 55 means of set screws 15, 16) to act on suc same taut I preferably make the bearings 11, raised. 12 of the rollers 7 and 8 capable of sliding in I If the tubes 21 become overheated their the standards 3 and provide springs 13, 14 operation is interfered with, and to obviate (the tension of which can be adjusted b this I proposeto arrange a fan 27 ad'acent to fi one end of the glass roller 1, and rive the current of air throughroller sensitized pa -secured to t i to slip in relation to the other,

culated so as to give the correct exposure for V and sensitized paper to be firmly ped'an same by means of pulleys 28 and 29 and a I belt 30 from the shaft of the roller 9, or in any other suitable manner, so as to create a 1 and thus keep l the-tubes 21 cool, In operation a' roll of ferro prussiate or like er 31 is mounted in bearin 32 e standards 3, and it an the tracing 33 to be copied are entered between the surfaces of the band 10 and the lass tracing in contact with the glass, and the aparatus is then rotated, causing such tracing drawn evenly an smoothly throug the ap-. paratus, there being-no tendency for either as they are each independently acted on and caused to travel at exactly the same s eed As they pass the mercury tubes the ight will effect the printing, the speed of rotation being calthe time occupied in assing such tubes, and the tracing and sensitized paper are passed out at the point 35, such sensitized paper being then if desired rewound on to a roll mounted in bearings 36, which may in this case be driven fromroller 8 or inany other suitable manner.

Guides or s 'elds 37 are arranged on each side of glass roller 1 below the points 34 and 35 to guide the tracing into and out of the a paratus, and at the same time prevent t e 'ght from acting on the sensitized paper before it and the tracing are firmly gripped by the en less band and glass roller.

What I claim-as m invention, to secure by Letters atent, is 2- 1. In a continuous photogra hie printing apparatus the combination 0 a revolving transparent roller, a lurality of band rollers disposed around sai transparent roller and having an endless band assing over them, a base sup orting said ro ers and means conand desire base substantially as specified.

specified. roller 1 at the point 34 with the face 0 the meshing with said on one of said ban municating motion to rio'if of the glass roller,

ling the suppl 2. In a continuous photogra a paratus the combination 0 g ass roller, a plurality of band rollers disposed around said glass roller and having an hic printing a revolving endless band pass over them, mounted on the g ass roller,an a pinion meshing'with suchgear wheel and mounted on one of the band rollers, means for communicatin'g motion to such pinion, electric mercury vacuum tubes arranged in the interior of the glass roller, a base' and a frame supporting the whole of these parts, and movably mounted to the base substantially as 3.. In a continuous photogrgphic printing paratuslthe combination 0 ass roller, a plurality of band rollers dissed around saidglass roller and havinglari endless band passing over them, a ar w mounted on the g ass roller an a pinion (gear wheel and mounted rollers, means for commerqury vacuum tubes arranged in the inte-' switches for .c'ontrol- 'of electric current to such tubes, a pivot connection between the base plateon which these parts are mounted and the main frame of the apparatus, and automatic means operated by the tipping of the base plate on such pivotal connection for act-v ing on the switches to controlthe supply of current to such tubes, substantially as speci fied.

a revolving said pinion, electricv a fear wheel 4. Ina continuous photogra hie printing.

a paratus the combination 0 a revolving g ass roller, a plurality of band rollers disosed around said glass roller and havin an endless band passin over them, a ear w eel mounted on the g ass roller .an a pinion meshing with such ear wheel and mounted on one of said bani? rollers, means for communicating motion to such pinion, electric mercury vacuum tubes arranged in the interior of the glass roller, a fan mounted at one end of'the glass roller, means for actuating such fan,"a base, and a pivotal connection uniting said base andthe main frame of the testimony whereo a in presence. of two witn.

JAMES WARRY VICKERS. Witnesses:

Josnrn JACKSON,- Homer: Wane. 

